Dynamo-electric machine



Aug. 12, 1930. J. H. YEAGER DYNAMO ELECTRIC MACHINE Filed Nov. 15, 1.927

INVENTOR.

uroxmz s Patented Aug. 12, 1930 UNITED STATES y y i 1,772,655

PATENT OFFICE JOHN H. YEAGER, OF CLEVELAND, OHIO, ASSIGNOR TO THE RELIANCE ELECTRIC AND ENGINEERING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO DYNAMIC-ELECTRIC MACHINE Application filed November 15, 1927.

The present invention relates to dynamo electric machines, and more particularly to a machine of this type in which the rotor encloses the stator, the stator being stationarily supported, and the principal object of the invention is to provide novel supports for the ends of the stator shaft which will add materially to the ease of setting up the machine. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following 15 description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used. 29 In said annexed drawing:

Fig. 1 is a broken transverse section through a machine of the type indicated showing the supports for the stator shaft in side elevation; Fig. 2 is an end elevation of the support shown at the right in Fig. 1; and Fig. 3 is an end elevation of the support shown at the left in Fig. 1. I

Referring more particularly to the drawings, the reference numeral 1 indicates a stator shaft having a longitudinal bore 2, and carrying stator windings 3. A rotor 4 is journalled as at 5 on the stator shaft, and a shell 6 of larger diameter is mounted to enclose said stator and rotor and to provide air passages 7 between said rotor and said shell.

One end 8 of the shaft 1 is provided with an inletport 9 leading from the bore 2 to the external surface of said shaft, and said end is adapted to be mounted in a support comprising a standard 10 having an open recessed upper end 11 flanked by lateral flanges 12 and a yoke 13 having a recessed surface 14 flanked by lateral flanges 15, said flanges 12 r and 15 being adapted to be secured together by means of screws 16 or other equivalent fastening means to clamp such shaft end 8 tightly between said recessed surfaces 11 and 14; The standard 10 is provided with a passage 1T terminating at one end in a port 18 Serial No. 233,374.

opening through a lateral face of said standard and screw-threaded for the reception of a supply pipe 19 as clearly shown in Fig. The other end of said passage 17 terminates in a port 20 in the recessed surface 11 of said standard. The shaft is provided with a plurality of outlet openings 21 leading from said bore to, and opening into, the confines of said shell 6.

The opposite end 22 of said shaft 1 is provided with a passage 23 opening from said bore 2 to the external surface of said shaft and is mounted in a support comprising a standard 24 having an open recessed upper end 25 flanked by lateral flanges 26 and a yoke 27 having a recessed portion 28 flanked by lateral flanges 29. Said flanges 29 and 26 are adapted to be secured together by means of screws or similar fastening means 30 to clamp said shaft end 22 securely, between said recessed surfaces 25 and 28.

Electrical conductors 31 are connected to the stator windings and are threaded through a passage 32 into said bore 2 and through said passage 23 to a closure plate 33 adapted to close the outer end of said passage 23 and provided with a plurality of contact plates 34 to which the ends of said conductors 31 are attached. The yoke 27 is provided with a conduit 35, the outer end of which is disposed in the flange 29 is such a position as to register with a screw-threaded aperture 36 in the corresponding flange 26 adapted to receive a tube 37 enclosing a plurality of conductors 38. Said conductors 38 are threaded through said tube 37, aperture 36, and conduit 35, and are connected to contact plates 40 formed on a closure 39 positioned in the recessed surface 28 at the mouth of said conduit 35.

In assembling a machine of the type illustrated in accordance with the present invention, the shaft 1 is merely dropped into the recesses of the standards 10 and 24 in such a position that the ports 9 and 20 register with each other. The yoke 13 is then attached to the standard 10 to clamp the shaft end 8 in position in such standard, and provision for a flow of ventilating air through the machine is thus. easily made. The paslit sage 23 is formed at a point 180 r moved trom the port 9 and consequentlf, positioning port 9 automaticall positions the passage The contact pla es are therefore automatically brought into such a position that, when the yoke 27 is fastened to the standard 2dr, the contact plates lO are brought into abutting relatioi with said contact plates 8%, thereb proriding a proper connection of the source of electrical energy with the stator windings 3. Thus it will be seen that itis unnecessary to connect or disconnect a plurality of wires in oroer to assemble or disassemble the machine and that it is also unnecessary to make any speial connections for the flow of Ventilating air through the machine. The present invention makes it possible merely to drop the stator shattt into supp rts and to make all neces: connections merel'-' bf. clamping; the r into po. the stancards. T he p; ihilit qol't making improper electrical connections is also obviated since the shaft connection and the yoke connection. are alwa s in the same relative positions.

Other modes of apph my intention may be e the one explained, chan. regards the mechanism he Yided the means stated lo ring claims or the cquii i means be employed.

1 therefore 'iarticularl i point on tinctl claim as my inrention:

l. 4; support for a stationar rod of a c jinan'io electric machine comprisii a stand ard formed at its r ocr end said standard oeing termed with a with a recess opening at its one end into sa s at its other end Hire 1 a laeral tare at said standard. and a i with a recess and adapted to lie vi to s 'l standard with its recess i c: with ai standard recess.

0 A i t .0 L St /QO- t t recto r t ed in passage and connected to said contact plate. 3. In con binatioi with a d ;namo-elcctrio machine comprising a stationary shat; ca

ing stator windings, a rotor onrnaled on said shaft and enclosing, said stator windings, and a shell surrounding said rotor and spaced therefrom to form tiuin passt 5;" said shaft being pro *ided witl a bore hating an inlet port and, an outlet port, a support for said con'iprising a standard having an open miuatingr in a port in :;aid recessed tace, said inlet port to said bore registering with said standard port, and meii for retaining said shaft end in position in said recesse jl portion or said standard.

i. In coinh tion with a dynnine-electric machine comprising a stationary shalt cairn ing stator windings, a rotor journaled on said shaft and enclosing said stator windings, and a shell surroiniding said rotor and spaced a standard adapted to receive and support one end of said sha t, said standard and shaft being; itorn'ied with conipleii'ientarr ports ano with passages conninniicaijino; tln rewith, whereby a cooling fluid may plied to said fluid passage.

In combination with a dynatno-clectric machine comprisin51 a station ary shatt carry ing stator winding ,and a rotor journaled on said shaft and enclosin aid stator windings, sain shaft leine proii' ad with a here, electrical cmnluctors in said bore, contact pla es carried on the surtace of said shaft adjacent one end thereot and connected to said couductors respectirely. a sti ndard having a reccv 1ed upper end receiving; said en: it said shatt, and a rolic having a rcce. d portion adapted to be attached to said uilfllitlt'l to 'rlamp said shatt er l in position, and being provided with a passage, ele ical (OlliltlC'lOl'S in said pass contact plates carried on the rec ed surlace ot said yoke and connected to said last-mentimied conductors, and means tor clai'nping' d yoke to said standard and forcing said yoke contact plr s into engagement w ith said shalt con act, plates.

6. In combination with a dynamo-electric machine comprising a stationary shalt ca rrying stator windings, 'otor jou 'naled on said shaft. and enclosing said stator windings. a nd a shell surrounding said rotor and spaced therefrom to form air passages, said shaft he lug provided with a bore, and having an inletport thr ugh one end 01 said shalt and an outlet port located interiorly of said shell, a support for said ported end of said shaft comprising a standard having an open rec 'ed upper end, and being provided with p. age, one end of which opens through a lateral face of said standard and the other end of which terminates in a portin Said re cessed end of said standard, the ported end of said shaft being received in the recessed end of said standard with the shaftport in registry with the standard port. and means clamping said shaft end in position, a plural it of electrical conductors in said shaft bore, said shaft being provided at its other .end with a passage leading from said bore to the surface of said shaft, a closure in the end of said passage carrying contact plates, said conductors being attached to said contact plates, respectively, and a support for said other end of the shaft comprising a standard having an open recessed upper end receiving said other end of said shaft and a yoke to clamp said shaft end in position, said yoke being provided with a recessed surface, contact plates in said recessed surface, said yoke further being provided with a conduit terminating adjacent said contact plates, electrical conductors in said conduit and connected to said contact plates, and means to clamp said yoke to said standard with said yoke contact plates in contact with said shaft contact plates.

7. The combination with a dynamo-electric machine including a stationary shaft, of a support having a recess adapted to receive said shaft, said shaft and support being provided with means for automatically estab lishin an electrical circuit including a winding of: said machine when said shaft is secured in said recess and for automatically breaking said circuit when said shaft is removed from said recess.

8. In combination with a dynamo-electric machine including a shaft, a standard having a recessed upper end adapted to receive an end of said shaft, a contact plate on said shaft end, means for retaining said shaft end in said recess, a contact plate carried by said means, and cooperable with said shaft contact plate, and means connected to said contact plates and establishing an electrical circuit including a winding of said machine when said shaft end is secured in said recess.

9. In combination with a dynamo-electric machine including a hollow shaft, a standard having a recessed upper end adapted to receive an end of said shaft, means for retaining said shaft end in said recess, electrical conductors housed in said shaft, electrical conductors housed in said means, and cooperating means on said shaft and on said means providing an electrical connection between said two sets of conductors when said shaft end is secured in said recess.

10. The combination with a dynamo-electric machine including a shaft, of a pair of standards formed with open recesses at their upper ends, said shaft and standards being provided with cooperating means automatically establishing an electric circuit including windings of said machine and automatically establishing a mechanical connection permitting a flow of fluid to the interior of said shaft when the ends of said shaft are secured in said recesses, and breaking said circuit and said connection when said shaft is removed from said recesses.

11. The combination with a dynamo-electric machine including a shaft, of a'support having a recess adapted to receive one end of said shaft, said shaft end and support being provided with means for automatically establishing an electrical circuit including a winding of said machine when said shaft end is secured in said recess and for automatically breaking said circuit when said shaft end is released from said recess, and a second standard having a recess adapted to receive the other end of said shaft, said other shaft end and second standard being formed to establish automatically a mechanical connection providing for flow of fluid through said second-standard to the interior of said shaft when said other shaft end is dropped into its recess, and to break such connection when said other shaft end is removed from its recess.

12. In combination with a dynamo-electric machine including a shaft, a support for said shaft, and cooperating means on said shaft and said support adapted, when said shaft is secured in position on said support to establish an electrical circuit including a winding of said machine.

13. In combination with a dynamo-electric machine including a shaft, a support for said shaft, a contact plate carried by said support, and a contact plate on said shaft adapted, when said shaft is secured in position on said support, to engage said support contact plate to establish an electrical circuit including a Winding of said machine.

14. In combination with a dynamo-electric machine including a bored shaft having a port adjacent its one end communicating with the bore of said shaft, a support for said end, said support being formed with a bore opening through a port in its upper surface, a support for the opposite end of said shaft, a contact plate carried by said latter support and connected to a source of electrical energy, and a contact plate carried by said latter shaft end and connected to a winding of said machine, whereby, when said shaft ends are secured in position on said supports, a mechanical connection providing for a flow of fluid to the interior of said shaft and an electrical circuit including said winding are automatically established.

15. In combination with a dynamo-electric machine including a bored shaft having a port adjacent its one end communicating with the bore of said shaft, a support for said end, said support being formed with a bore opening through a port in its upper surface, a support for the opposite end of said shaft, 2. contact plate carried by said latter support and connected to a source of electrical energy, and a contact plate carried by said latter shaft end and connected to a winding of said machine, whereby, when said shaft ends are moved, in a direction transverse to the axis of said shaft, into position on said supports and are secured in such posit-ion, a mechanical connection providing for a fiow of fluid to the interior of said shaft and an electrical Ill circuit including said winding are automatically established.

16. In combination with a dynamo-electric machine including a bored shaft having a port adjacent its one end communicating with the bore of said shaft, a support for said end, said support being formed with a bore opening through a port in its upper surface, and registering with said shaft port to form a mechanical connection providing for a flow of fluid to the interior of said shaft, a support for the opposite end of said shaft, 21 contact plate carried by said latter support and connected to a sourceof electrical energy, and a contact plate carried by said latter shaft end and connected to a winding of said machine, said shaft contact plate engaging said support contact plate to establish a circuit including said winding, whereby, when said shaft ends are removed from said supports in a direction transverse to the axis of said shaft, said mechanical connection and said electrical circuit are automatically broken.

Signed by me, this 17th day ofSeptember,

JOHN H. YEAGER. 

